. >> biden added the obama administration was determined to fix the nation's immigration policies. the prime minister of israel and palestinian president addressed the united nations general below. mahmoud ahmadinejad wants the u.n. to recognize palestine as an observer state. and israel presented their own outlines. and yesterday egyptian's new president spoke. >> reporter: egypt's new highly elected president made his first appearance. >> translator: today every egyptian shares a sense of self-confidence. >> reporter: he called for the world to step in to end the violence in syria. >> translator: we have to put an to end this tragedy. it is the tragedy of the age. >> reporter: iranian president mahmoud ahmadinejad challenged the dominance of world powers in his final address at the u.n. the united states and israel have pledged to do what they must to prevent tehran from deeflg nuclear weapon. >> translator: continued threats by the uncivilized zionist to resort to military action against our great nation is a clear example of this reality. >> reporter: u.s. and israeli leaders c